| Optical
System |
|
Fully
symmetrical double beam system
All mirrors coated for long life
|
| Monochromator |
|
Modified
Czerny-Turner design using 1200 |
| Detectors |
|
Two
silicon diode detectors |
| Self
Fest and Calibration |
|
Automatic
at switch on |
| Wavelength Range and Accuracy |
|
190-1100nm; 0.5nm |
| Wavelength
Reproducibility |
|
0.1nm |
| Wavelength
Readout |
|
Digital
display on screen |
| Wavelength
Selection |
|
By
GOTO key and keypad entry |
| Optical
Bandwidth |
|
<2nm
CE7400; 0.5, 1, 2, 4nm CE7500 |
| Stray
Light |
|
Less
thank 0.02% at 220nm, Nal; and 0.02% at
340nm, NaNO2 |
| Display
Screen |
|
Large
backlit LCD displays spectra, menus, data,
prompts and instrument status. |
| Display
Scrolling |
|
Provides
viewing width of 430nm |
| Derivative Spectra |
|
1st
to 4th derivatives |
| Autozero |
|
Automatic by press button |
| Photometric
Readout |
|
Digital
display of A, %T, and C on screen |
| Photometric
Accuracy |
|
±0.004A
at 1A |
| Photometric
Noise |
|
Less
than ±0.0001A at 550nm, 2nm b/width |
| Baseline |
|
Stored in non-volatile memory |
| Baseline
Flatness |
|
±0.001A
(300nm/min, 200-1100nm) 2nm bandwidth |
| Baseline
Stability |
|
Better
than ±0.001A/hour |
| Computer
Interface |
|
Bi-Directional RS 232c |
| Scan
Speeds |
|
1-4000nm/min |
| Wavelength
Scale Expansions |
|
1-100nm/cm |
| Method
Storage |
|
30
methods may be stored and retrieved |
| Method
Protection |
|
Each
protected by 4 digit passcode |
| Reaction
Kinetics |
|
With
plots, reprocessing of data as required,
for single cell or up to 6 cells |
| Overlaid
Scans |
|
Up
to 8 scans may be overlaid |
| Cell
Programming |
|
Up
to 4, 6, or 8 cells |
| Programme
Cycles |
|
From
1 to 9999 |
| Programme
Delay (cycle time) |
|
From
0 seconds to 4 days (1 sec resolution) |
| Wavelength
Prgramming |
|
Up
to 10 wavelengths. May be combined with
a cell programme |
| Dynamic
Scan Recall |
|
Last
25 scans automatically stored on board |
| Storage
of Spectra |
|
100
spectra may be stored code protected |
| Concentration
Curve Fitting |
|
Linear,
quadratic or cubic with editing of standards.
30 curves may be sotred protected |
| Formula
Entry and Computation |
|
Complex
formulae may be computed |
| Batch
Sampling |
|
Up
to 100 samples under internal control |
| Date
and Time Information |
|
Printed
from real time clock |
| Power
Requirements |
|
110-250V,
50/60Hz, 170Watts |
| Dimensions
and Weight |
|
635 x 410 x 210mm; 33kg |
